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Topological Rainbow Concentrator Based on Synthetic Dimension

  • 发布时间:2021-04-10
  • 点击次数:
  • 发表刊物:Physical Review Letters
  • 摘要:Synthetic dimension provides a new platform for realizing topological photonic devices. Here, we propose a method to realize a rainbow concentrator of topological photonic states based on the synthetic dimension concept. The synthetic dimension is constructed using a translational degree of freedom of the nanostructures inside the unit cell of a two-dimensional photonic crystal. The translational deformation induces a nontrivial topology in the synthetic dimension, which gives rise to robust interface states at different frequencies. The topological rainbow can trap states with different …
  • 论文类型:期刊论文
  • 卷号:126
  • 期号:11
  • 页面范围:113902
  • 是否译文:
  • 发表时间:2021

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